Twitter Widgets and my IE "Back Button"

[Doopri]

recently on several websites ive noticed its a pain in the ass to hit "back" - as in i feel im clicking it a million times (okay maybe 2 or 3) without effect.  anyway i finally noticed that when im having a problem, when i hover over the back button a tooltip comes up that DOESNT say "back to X" (the previous page) it says something like "back to twitter widgets something something something something..."

question: is this a virus or something new being embedded into websites?  is there a way for me to disable this in internet explorer or am i just going to have to start avoiding certain websites?

keep in mind i do not have a twitter account, i dont use it and as far as i know this computer has never even BEEN to the twitter page proper and id really rather NOT have it "following me around" or being imbedded in my back button

so, whats up with this?